drop table if exists babel_2619_t1
drop table if exists babel_2619_t2
drop table if exists babel_2619_t3
drop table if exists babel_2619_t4
drop table if exists babel_2619_t5_1
drop table if exists babel_2619_t5_2
drop table if exists babel_2619_t5_3
drop table if exists babel_2619_t6_1
drop table if exists babel_2619_t6_2
drop table if exists babel_2619_t6_3
go